by Lulu » Fri Feb 06, 2015 1:00 pm
by Crawfish » Fri Feb 06, 2015 6:31 pm
Lulu wrote:Bonding: Simplest way to bond a boat is to run a section of 3/4" copper pipe through the boat. Flatten the ends and drill #8 or #10 holes to attach the wires with SS sheet metal screws to the things that need to be bonded; like rudder, shaft, fuel tanks, through hull fittings, the shoe, metal poles or mast, etc. Main led goes to the engine because that is the largest piece of metal on the boat. Most import detail is to keep the connections clean and dry. Heat shrink, Sykoflex, grease all work, but make it simple and easy to access so you can trouble shoot fast. Any sign of corrosion needs to be cleaned. Any white precipitate means there is current. You need to find out why and fix it. The green stuff is normal oxidation of the copper, no big deal just keep it cleaned off. Don't !!! use silicon based sealer, it doesn't hold up. A top notch installation would be a 1/0 or 2/0 wire ran through the boat connected to busses for the connections, but it is more expensive. Always use 14 gauge wire. The voltage is small, but you want to maximize the impedance (ability of the current to run uninhibited).
Al anodes: I added Aluminum anodes to the rudder two seasons ago; one 8 pounder on each side. They go fast (steel boat) and I send a diver down about once a month to scrub them. I talked with Malcolm Russell about this in Dec 2014. He told me the Al anodes burn deep into the plate. It's best to replace them several times during the season to keep them as active as possible. I'm adding two more Al anodes to the hull just above the prop this season because when I keep the zincs and Al anodes clean the boat produces better. I can usually tell when I need to send the diver down cause the trip isn't as productive as I thought it should be. Also, I add small zincs to the fins on the floppers. You'll be surprised how fast they go. My belief is they help the snooters catch better (I might be dreaming on this one.)
Thing about Malcolm is he's forgotten more about the boat's electrical field and how to manage it than most of us will ever know. I find it productive to spend an hour (or two) on the phone reviewing my readings and asking a lot of questions. More times than not I get, "Didn't I tell you about that?" The thing is he's always experimenting with the tuna and salmon boats, he has an incredible following, and doesn't know how current you are with changes he has made in his thinking based on productive changes made in the respective fleets. You have to ask questions, lots of them.
by Scotthmt » Sun Feb 08, 2015 8:54 am
by Lulu » Sun Feb 08, 2015 10:41 am
by Once and Future » Mon Feb 09, 2015 4:28 am
by Kelper » Mon Feb 09, 2015 7:18 am
by SalmonSeeker » Mon Feb 09, 2015 9:46 am
by Lulu » Mon Feb 16, 2015 3:27 pm
by Scotthmt » Sun Mar 08, 2015 5:47 pm
by Lulu » Sun Mar 08, 2015 7:47 pm
by Scotthmt » Mon Mar 09, 2015 8:16 am
by Lulu » Tue Mar 10, 2015 7:38 pm
by Salty » Wed Mar 11, 2015 10:46 pm
by Lulu » Fri Mar 13, 2015 9:13 pm
by Lulu » Fri Mar 20, 2015 6:40 am
by Salty » Sat Mar 21, 2015 7:33 am
by Scotthmt » Sat Mar 21, 2015 11:52 am
by Lulu » Mon Mar 23, 2015 2:45 pm
by Abenal » Tue Dec 13, 2016 5:11 pm
Return to Mechanical & Electrical
Users browsing this forum: No registered users and 2 guests